feat(slides): update tagline and subtitle for enhanced clarity and engagement

Author: alfarahn

src/Dashboard/frontend/public/slides.html

@@ -193,11 +193,19 @@
         color: var(--azure-blue);
       }
       .s1 .tagline {
-        font-size: clamp(0.95rem, 1.15vw, 1.1rem);
-        font-weight: 600;
-        letter-spacing: 0.04em;
+        font-size: clamp(1.15rem, 1.45vw, 1.4rem);
+        font-weight: 800;
+        letter-spacing: 0.05em;
         color: var(--azure-blue);
-        margin-bottom: 1.2rem;
+        margin-bottom: 0.4rem;
+        text-transform: uppercase;
+      }
+      .s1 .tagline-sub {
+        font-size: clamp(0.85rem, 1vw, 1rem);
+        font-weight: 600;
+        letter-spacing: 0.18em;
+        color: var(--ink-mute);
+        margin-bottom: 1.4rem;
         text-transform: uppercase;
       }
       .s1 .sub {
@@ -1477,15 +1485,15 @@ <h1 class="anim d3">
             Your AI agent for<br />Azure <span>FinOps</span>.
           </h1>
           <p class="tagline anim d4">
-            Visibility · Agentic Remediation · Clarity in minutes
+            Visibility · Remediation · Clarity in minutes
+          </p>
+          <p class="tagline-sub anim d4">
+            Free · Open Source · Built by Microsoft
           </p>
           <p class="sub anim d5">
-            Surface waste, forecast spending, remediate directly with a
-            delegated agent.
-            <br /><br />
-            Visualize findings and optimization opportunities. Win back trust in
-            your cloud spend - years of FinOps Framework experience, all in one
-            simple portal.
+            Surface waste, forecast spending, remediate directly.
+            <br />
+            Win back trust in your cloud spend.
           </p>
         </div>
       </section>
@@ -1632,7 +1640,7 @@ <h3>Endless catch-up</h3>
       <section class="slide s3">
         <div class="content">
           <h2 class="section-title anim d1">
-            Solution - <em>From painful to predictable</em>.
+            Solution - <em>FinOps Agent</em>.
           </h2>
           <p class="section-lead anim d2">
             Agentic FinOps. One chat. Trust restored.